Download Genetics Practice Test - Kenston Local Schools

Genetics Practice Test
Name: _________________________
THIS PRACTICE TEST DOES NOT COVER EVERYTHING YOU NEED TO KNOW FOR THE TEST!
Fill In.
1. _________________________ The name of the branch of Biology that studies heredity.
2. _________________________ The man that looked at the sexual mechanics of pea
plants and found that traits are inherited from parents.
3. _________________________ Organisms that have two different alleles for a
particular trait are said to be _________________.
4. _________________________ An organism’s physical appearance is its __________.
5. _________________________ A gene is considered this if its trait shows no matter
what other allele is present.
Multiple Choice.
6. _____ In Drosophila (House fly) red eyes are dominant and found on the X chromosome. When
a red-eyed male Drosophila (House fly) is crossed with a homozygous white-eyed female
Drosophila, the probability that the male offspring will be red-eyed is:
A. 1/4
B. 1/2
C. 3/4
D. 1/3
E. 0
7. _____ An example of a trait that is determined by multiple alleles is:
A. Huntington’s disease
B. ABO blood groups
C. Down’s syndrome
D. Hemophilia
8. _____ Which is an example of a disorder in which there are three sex chromosomes?
A. Down’s syndrome
B. Klinefelter’s
C. Turner’s
D. Huntington’s
9. _____ In order to determine if a person has a genetic disorder caused by too many or not
enough chromosomes, the scientist would use a ______________.
A. Pedigree
B. Punnett Square C. Karyotype D. phenotype E. genotype
10. _____ The parent that determines the sex of their offspring is ______________.
A. the father only B. the mother only C. both parents D. neither parent, its simply by chance
11. Complete the following table.
Blood Type
Red Cell Antigen
Antibody in Blood
Plasma
A
B
AB
O
12. _____ Which blood type is the universal donor?
13. _____ Which blood type can receive a blood transfusion from any other blood type?
1
Genetics Problems.
NO WORK = NO POINTS!
1. 1. A blue-eyed man both of whose parents are brown-eyed marries a brown-eyed woman whose father
was brown-eyed and whose mother was blue-eyed. They have one child who is blue-eyed. What are
the genotypes of all the members mentioned? (Hint: Try making a pedigree!)
Man: ______________________
Man’s mother: ______________
Man’s father: _______________
Woman: ___________________
Woman’s mother: ___________
Woman’s father: ____________
Child: ____________________
2. A. In man color blindness, an inability to distinguish between red and green, is inherited as a
sex-linked character on the X chromosome and is a recessive trait. If a normal-visioned man
marries a heterozygous normal woman, what are the chances of the males being color blind?
What are the chances of the females being color blind? How many females will be carriers?
2
3. Suppose that a woman on a talk show claims that one of two gentlemen could be the father of her
baby; the men deny this allegation. The mother has group O blood, the child has A, and the one
possible father has type AB blood while the other has type B blood. Which man is the most
probable father. (Be sure to prove this using a punnett square!)
4. In Japanese four-o’clocks, the gene for red flower color is incompletely dominant to white. The
heterozygous genotype creates pink flowers. Predict the outcome of a cross between a red-flowered
plant and a pink-flowered plant.
3
5. Determine the genotypes of each of the individuals in the pedigree then answer the questions below.
a.
How many generations are represented in the pedigree? _____________________
b.
Is this trait autosomal or sex-linked? ____________________________________
c.
Is this trait dominant or recessive? ______________________________________
d.
Which individuals are affected by this genetic disorder? _______________________
e.
Is individual III- 8 a male or female? ______________________________________
f.
Which individuals are carriers? _________________________________________
g.
In which individuals can the second allele NOT be determined from the information given?
_____________________________________________________________
4